I finally tried out the Welcome Screen. It was just what I needed for this one site I’m working on! Awesome new feature.
Unfortunately, my client’s logo appeared much too small and I can’t adjust the size (I see others have also expressed their voice on this).
UPDATE: Originally I posted about a 2nd issue with not being able to change the background color. Not sure what that glitch was about, but I closed and reopened my editor. Glitch was gone. And I was able to change the background color. Still, not going to use the welcome screen for my current site, I really need the ability to optimize the size of the logo. But cool idea! Will check back for updates.